Something I have been meditating on...
"How do you know what will happen tomorrow? For your life is like the morning fog-it's here a little while and it's gone. What you ought to say is, 'If the Lord wants us to, we will live and do this or that.' Otherwise you will be boasting about your own plans, and all such boasting is evil. Remember it is a sin to know what you ought to do then not do it."
James 4:14-17